Castilleja thompsonii |
Castilleja mogollonica |
|
---|---|---|
Thompson's Indian paintbrush, Thompson's owl clover, Thompson's paintbrush |
Mogollon or White Mountains paintbrush |
|
Habit | Herbs, perennial, 0.8–4 dm; from a woody caudex; with a taproot. | Herbs, perennial, 2.5–5 dm; from a woody caudex; with a taproot. |
Stems | few to many, erect or ascending, unbranched or branched, hairs spreading, long, stiff, sometimes soft (especially in higher elevations), eglandular, mixed with shorter stipitate-glandular ones. |
few to several, ascending to erect, unbranched or branched distally, sometimes with a few small, leafy axillary shoots, hairs spreading, long, soft, eglandular. |
Leaves | green to purple or reddish brown, linear to narrowly oblong or linear-lanceolate, 1.4–7.4 cm, not fleshy, margins plane to ± wavy, involute or flat, 3(–7)-lobed, apex acuminate; lobes spreading-ascending, linear, short to long moving up leaf axis, apex acute or obtuse. |
green to purple-tinged, sometimes purple, narrowly to broadly lanceolate, 2.5–5 cm, not fleshy, margins plane, sometimes ± wavy, flat, 0(–5)-lobed, apex acuminate; lobes ascending-spreading, linear to narrowly lanceolate, apex acute. |
Inflorescences | 2.5–14 × 1–4 cm; bracts greenish to pale yellow or reddish brown throughout, or proximally greenish to dull reddish purple, or ruddy brown, distally greenish to yellow-green or yellow, often aging dull reddish to dull purplish, lanceolate to oblong to ovate, 3–5(–9)-lobed; lobes spreading to ascending, linear to narrowly lanceolate, long, proximal lobes arising below mid length, apex acute to obtuse. |
3–15 × 2–4 cm; bracts proximally greenish, distally yellow-green, green, pale yellow, cream, or pale orange, often tinged with bright orange along margins, aging dull pink, broadly lanceolate to oblong or obovate, (0–)3–5(–7)-lobed; lobes ascending to erect, linear to narrowly lanceolate, medium length, arising above or below mid length, central lobe apex rounded to obtuse, lateral ones usually acute. |
Corollas | straight, 18–21 mm; tube 11–16 mm; subequal to calyx, sometimes beak exserted; beak adaxially green, 5–7(–8) mm; abaxial lip white, often proximally reddish, prominent, scarcely expanded, ± cylindric, 2.5–4(–5) mm, 50–70% as long as beak, glabrous or obscurely puberulent; teeth incurved to erect, white, 2.5 mm. |
straight, (15–)17–27 mm; tube 11–12 mm; beak exserted, adaxially green, 9–10 mm; abaxial lip green, reduced, visible in front cleft, 0.5–2 mm, 10–20% as long as beak; teeth incurved to erect, green, 0.5–1 mm. |
Calyces | colored as bracts, 12–25 mm; abaxial and adaxial clefts 4–8 mm, 20–60% of calyx length, deeper than laterals, lateral (0–)1–3 mm, 7–25% of calyx length; lobes linear, lanceolate, or triangular, apex acute, sometimes obtuse. |
colored as bracts, 13–20 mm; abaxial and adaxial clefts 5–9 mm, 33–50% of calyx length, deeper than laterals, lateral 1–2 mm, 7–25% of calyx length; lobes oblong, apex acute to rounded. |
2n | = 24, 48. |
= 24, 48. |
Castilleja thompsonii |
Castilleja mogollonica |
|
Phenology | Flowering Apr–Aug(–Sep). | Flowering Jun–Sep. |
Habitat | Dry slopes, ridges, scabland lithosol soils, meadows, sagebrush steppes, valleys, montane to alpine. | Subalpine wet meadows and springs, mixed conifer forests, volcanic soils. |
Elevation | 200–2100 m. (700–6900 ft.) | 2600–2900 m. (8500–9500 ft.) |
Distribution |
OR; WA; BC
|
AZ |
Discussion | Castilleja thompsonii is a characteristic species of the sagebrush communities on the eastern slope of the Cascade Range in Washington, and in the high deserts of the Columbia Basin. Historically, its range approached but apparently never entered Idaho in the Spokane River valley, but much of its habitat in that area is now converted to agriculture or suburban development or overwhelmed by non-native, invasive plants. Castilleja thompsonii occurs in a few sites in the Okanogan Valley region of southern British Columbia and at one site on the eastern slopes of the Cascade Range in Wasco County, Oregon. A distinctive form from the subalpine and alpine zones of Mt. Adams, in the southern Cascade Range of Washington, was named C. villicaulis. This form may merit varietal status under C. thompsonii. While both names were described in the same paper, C. thompsonii is the name used in all regional floras since their publication, after C. villicaulis was reduced to synonymy by M. Ownbey (1959). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Castilleja mogollonica is endemic to the Mogollon Rim in the White Mountains of Apache County. It is frequently confused with the widespread C. septentrionalis but is amply distinct therefrom. This species faces threats from grazing, road building, and recreational activities. It occasionally hybridizes with C. nelsonii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 661. | FNA vol. 17, p. 632. |
Parent taxa | Orobanchaceae > Castilleja | Orobanchaceae > Castilleja |
Sibling taxa | ||
Synonyms | C. villicaulis | |
Name authority | Pennell: Proc. Acad. Nat. Sci. Philadelphia 99: 178. (1947) — (as thompsoni) | Pennell: Notul. Nat. Acad. Nat. Sci. Philadelphia 237: 1. (1951) |
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